Results 31 to 40 of about 85,924 (263)

Study of the influence of anthropogenic factors on organism

IOP Conference Series: Earth and Environmental Science, 2021
Abstract The use of iron nanoparticles of various forms in industry continues to grow; therefore, there are risks of environmental damage and toxicity. The study was conducted on Wistar rats (n = 36). Nanoparticles of iron oxide and cobalt ferrite were injected once intraperitoneally at doses of 2 and 2.3 mg/kg (45 nm).
S V Notova, T V Kazakova, O V Marshinskaia, E V Kiyaeva, E V Sheida   +4 more
openaire   +1 more source

Periods of domination of the influence of natural and anthropogenic factors on climate

Гидросфера. Опасные процессы и явления, 2023
Рассмотрена роль естественных и антропогенных факторов в формировании изменений климата за период инструментальных наблюдений (период с 1881 по 2022 год). Показано, что за последние 130 лет приток прямой солнечной радиации на подстилающую поверхность испытывал значительные изменения в результате многолетних изменений содержания в атмосфере ...
Vladimir F. Loginov, Yuliya A. Brovka
openaire   +2 more sources

Emerging Marine Diseases--Climate Links and Anthropogenic Factors

Science, 1999
Mass mortalities due to disease outbreaks have recently affected major taxa in the oceans. For closely monitored groups like corals and marine mammals, reports of the frequency of epidemics and the number of new diseases have increased recently. A dramatic global increase in the severity of coral bleaching in 1997–98 is coincident with high El Niño ...
Harvell, C. D., Kim, K., Burkholder, J. M., Colwell, R. R., Epstein, P. R., Grimes, D. J., Hoffmann, E. E., Lipp, E. K., Osterhaus, A. D.M.E., Overstreet, Robin M., Porter, J. W., Smith, G. W., Vasta, G. R.   +12 more
openaire   +4 more sources

TECHNOGENIC IMPACT ON YAMAL-NENETS OIL AND GAS PRODUCING REGION GROUND WATERS AND ASSESSMENT OF THEIR PROTECTION DEGREE

Известия высших учебных заведений: Нефть и газ, 2015
At present the natural environment of the Yamal-Nenets oil and gas producing province is under a strong anthropogenic impact. The main source of drinking and household water supply in the area are fresh underground waters of the Eocene and Quaternary ...
V. A. Beshentsev, T. V. Semenova
doaj   +1 more source

Anthropogenic impact on the Himalayan marmot population in Nepal

RUDN Journal of Ecology and Life Safety, 2020
Anthropogenic impact on the Himalayan marmot population in Nepal is discussed. Above the upper border of the forest, human shares the same habitats with marmots on the alluvial terraces of river valleys. Human buildings and farmland lead to fragmentation
Alexander A. Nikolskii, Elena A. Vanisova   +1 more
doaj   +1 more source

Problems of creating a comfortable urban environment in the territory of municipalities of the Russian Federation (on the example of the city of Omsk)

Наука Красноярья
The problem of creating a comfortable urban environment in modern conditions occupies a special place in the socio-economic aspect. The rapid growth of cities served as an impetus for the development of various spheres of socio-economic nature and ...
Nina V. Borovskikh, Tatyana A. Chizhikova, Ekaterina I. Salnichenko   +2 more
doaj   +1 more source

Baikal endemic sponge disease and anthropogenic factor

IOP Conference Series: Earth and Environmental Science, 2021
Abstract This article presents the results of observations of the state of the Baikal endemic sponge fauna (Fam. Lubomirskiidae) in the five-year dynamics against the background of their mass mortality. We indicate the change in the projective bottom cover with healthy and diseased sponges at two sites that are radically different from ...
O Maikova, N Bukshuk, L Kravtsova, I Nebesnyh, A Yakhnenko, T Butina, I Khanaev   +6 more
openaire   +1 more source

Role of natural and anthropogenic factors in causing frequent floods in Assam, India: A scoping review

International Journal of Environmental Health Engineering, 2023
Assam is a state in Northeast India facing floods every year which leads to human misery and devastation of nature. The objective of this review is to explore the natural and anthropogenic factors causing flood in Assam over a period of 11 years.
Joshitha Sankam, Arathi P Rao, Kumar Sumit, Rajnarayan Ramshankar Tiwari   +3 more
doaj   +1 more source

Reconstructing enzyme evolution by protein engineering

FEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler, Markus R. Busch, Reinhard Sterner   +2 more
wiley   +1 more source

Bias‐Triggered Conductivity Relaxation (BCR): A Unique Tool to Simultaneously Investigate Thermodynamics, Kinetics, and Electrostatic Effects of Oxygen Reactions in MIEC Thin Films

Advanced Materials, EarlyView.
This work develops bias‐triggered conductivity relaxation as a novel technique to study oxygen reactions in mixed ionic‐electronic conducting thin films by integrating electrochemical titration and electrical conductivity relaxation to achieve synchronous multi‐parameter characterization, providing simultaneous electronic, ionic, and extraordinarily ...
Alexander Stangl, Alexander Schmid, Adeel Riaz, Jürgen Fleig, Arnaud Badel   +4 more
wiley   +1 more source